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Trapped Ion Quantum Computing

Advantage of Coherent States in Ring Resonators over Any Quantum Probe Single-Pass Absorption Estimation Strategy

arXiv
Authors: Alexandre Belsley, Euan J. Allen, Animesh Datta, Jonathan C. F. Matthews

Year

2021

Paper ID

40658

Status

Preprint

Abstract Read

~2 min

Abstract Words

71

Citations

N/A

Abstract

Quantum states of light have been shown to enhance precision in absorption estimation over classical strategies. By exploiting interference and resonant enhancement effects, we show that coherent-state probes in all-pass ring resonators can outperform any quantum probe single-pass strategy even when normalized by the mean input photon number. We also find that under optimal conditions coherent-state probes equal the performance of arbitrarily bright pure single-mode squeezed probes in all-pass ring resonators.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2021 reference point for readers tracking recent quantum research.
  • Quantum states of light have been shown to enhance precision in absorption estimation over classical strategies.

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